diff --git a/src/app_helper.cc b/src/app_helper.cc
index 18e21519..2611a45d 100644
--- a/src/app_helper.cc
+++ b/src/app_helper.cc
@@ -99,6 +99,10 @@ const char* strsettingsid(int32_t id)
     return "SETTINGS_MAX_CONCURRENT_STREAMS";
   case NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE:
     return "SETTINGS_INITIAL_WINDOW_SIZE";
+  case NGHTTP2_SETTINGS_MAX_FRAME_SIZE:
+    return "SETTINGS_MAX_FRAME_SIZE";
+  case NGHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE:
+    return "SETTINGS_MAX_HEADER_LIST_SIZE";
   default:
     return "UNKNOWN";
   }